Bollinger Bands & Fibonacci Retracements

Bollinger Bands are a volatility indicator created by John Bollinger in the 1980s. The concept is elegant: wrap a moving average with bands that automatically widen when the market is volatile and contract when it is calm. This gives you a visual envelope of "normal" price behaviour at any point in time.

The indicator consists of three lines plotted directly on the price chart:

• Middle Band: A 20-day Simple Moving Average (SMA). This is the baseline and represents the average price over the last 20 sessions.
• Upper Band: Middle Band + 2 standard deviations. This marks the upper boundary of the expected price range.
• Lower Band: Middle Band - 2 standard deviations. This marks the lower boundary of the expected price range.

Statistically, about 95% of price action falls within two standard deviations of the mean. So when price steps outside these bands, it signals something unusual is happening.

The key behaviour to watch is band expansion and contraction. When INFY is swinging Rs.30-40 per day during an earnings season, the bands will be wide apart. When it settles into a quiet consolidation phase, the bands squeeze together. This expansion and contraction cycle is the heartbeat of the indicator.

The squeeze is the most powerful signal Bollinger Bands produce. When the bands contract to their narrowest width in several weeks, it tells you that volatility has compressed to an extreme — and like a compressed spring, the market is building energy for a large move.

The squeeze itself does not tell you the direction of the coming move. It only tells you that a big move is imminent. You need the breakout to reveal whether the move will be up or down.

Consider RELIANCE in a period where it was trading in a tight range around Rs.2,450 to Rs.2,510. On the daily chart, the Bollinger Bands had contracted to their narrowest gap in over two months. Volumes were drying up — a classic sign of compression. Then one session, the stock gapped up and closed above Rs.2,520 with volume nearly twice the 10-day average. The upper band started expanding immediately, and RELIANCE trended up past Rs.2,600 over the following two weeks.

• Identify the squeeze: Look for bands that are closer together than at any point in the last 6-8 weeks. The tighter the squeeze, the bigger the potential move.
• Wait for the breakout: Do not trade the squeeze itself. Wait for a candle to close decisively outside the band — above the upper band for a long trade, below the lower band for a short.
• Confirm with volume: The breakout candle must show volume at least 1.5x the 10-day average. Without volume, the breakout has a high chance of being a false signal.
• Set your stoploss: Place the stoploss at the opposite band or the middle band, depending on your risk appetite. The middle band (20-day SMA) acts as the first support in an upside breakout.

One of the most common mistakes beginners make is treating the bands as rigid overbought and oversold boundaries. Price touching the upper band does not automatically mean overbought, and price touching the lower band does not automatically mean oversold.

In a strong uptrend, price will consistently ride along the upper band — this is called "walking the band." BAJFINANCE during its powerful rally from Rs.5,800 to Rs.7,200 spent weeks hugging the upper Bollinger Band. Selling just because the price touched the upper band would have meant missing most of the move.

The real power of Bollinger Bands comes from mean reversion in range-bound markets. When a stock is not in a strong trend, price tends to bounce between the bands and return to the middle band (the 20-day SMA). This creates a reliable trading rhythm.

The strongest buy signal occurs when price touches the lower Bollinger Band and simultaneously the RSI reads below 30. This double confirmation tells you that the stock is at the lower end of its recent range and momentum is deeply oversold — ideal conditions for a mean-reversion bounce.

Consider WIPRO trading in a range between Rs.400 and Rs.440. When the price dipped to Rs.402, touching the lower Bollinger Band with RSI at 27, a swing trader could enter long with a stoploss at Rs.392 and a target of the middle band around Rs.420 — delivering a clean 2:1 reward-to-risk ratio.

The Fibonacci sequence is a series of numbers where each number is the sum of the two preceding ones: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, and so on to infinity. What makes this sequence extraordinary is the ratio between consecutive numbers — as the sequence progresses, this ratio converges on 1.618, known as the Golden Ratio.

This ratio appears everywhere in nature — in the spiral of a sunflower, the branching of trees, and the proportions of the human body. In markets, Fibonacci ratios mark levels where price tends to pause, reverse, or consolidate during a retracement within a larger trend.

The key retracement levels derived from the Fibonacci sequence are:

In practice, the 38.2% and 61.8% levels are the most reliable. If a stock retraces only to the 23.6% level, the trend is exceptionally strong. If it falls past 78.6%, the original trend is likely broken.

To apply Fibonacci retracements, you need two anchor points: a significant swing low and a significant swing high. In an uptrend, draw from the swing low to the swing high. In a downtrend, draw from the swing high to the swing low. Most charting platforms have a built-in Fibonacci tool that plots the levels automatically.

Let us walk through a real example. Suppose HDFCBANK rallies from a swing low of Rs.1,400 to a swing high of Rs.1,700 — a strong Rs.300 move driven by positive quarterly results and sector rotation into banking stocks. After hitting Rs.1,700, the stock begins to pull back as short-term traders book profits.

The question every swing trader asks is: where will this pullback end, and where should I enter for the next leg up? This is exactly where Fibonacci comes in.

In this example, HDFCBANK retraces to Rs.1,585 — sitting right at the 38.2% level — and forms a bullish hammer candle on that day with above-average volume. This gives the trader three confirmations: the Fibonacci level, a bullish candlestick pattern, and volume support. The stock then resumes its uptrend past Rs.1,700 over the following weeks.

• Step 1: Identify a clear, significant swing high and swing low on the daily chart. Avoid minor swings — the anchor points should represent a meaningful price move (at least 5-8% for large caps).
• Step 2: Apply the Fibonacci retracement tool from the swing low to the swing high (for an uptrend). The charting platform will draw horizontal lines at each level.
• Step 3: Watch how price behaves at the 38.2% and 61.8% levels. If a bullish candlestick pattern forms at either level with volume confirmation, it is a high-probability entry.
• Step 4: Set your stoploss below the next Fibonacci level. If you enter at 38.2%, your stoploss goes just below 50%. If you enter at 61.8%, your stoploss goes below 78.6%.